We had ours enclosed 5 years ago.
We went for knee high wall, opened the access into the Florida room and had a single door with half glass installed in the centre back wall/window area. We had single glass and full air con, which classed the area as Cat 5 in Fl state terms. We have no noise or heat issues. However, that will largely depend on the aspect of the lanai to the sun and any busy roads. That was something our builder advised us on during the planning and estimation phase. He also co- ordinated the airco work with our supplier ((Munns).
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